3512B Commercial Marine Propulsion Engine

3512B Commercial Marine Propulsion Engine

The Cat 3512B marine engine includes the Advanced Diesel Engine Management System II, Control Monitoring Protection System, Customer Communication Module, and Digital Voltage Regulator. Benefits include improved fuel economy, reduced visible and gaseous emissions, enhanced diagnostic and monitoring capabilities, and increased rated output with no reduction in reliability.

Power Rating

Power Range
1100-2250 bhp (820-1678 bkW)

Engine Specifications

Speed Range
1200-1925 rpm
Emissions
IMO I
Aspiration
TTA
Bore
6.7in
Stroke
7.5in
Displacement
3158.0in3
Rotation (from flywheel end)
Counterclockwise or Clockwise
Configuration
Vee 12, 4-Stroke-Cycle Diesel

Dimensions & Weights

Minimum Dry Weight
14411lb
Minimum Length
111in
Maximum Length
3067in
Minimum Height
71.1in
Maximum Height
82.3in
Minimum Width
67.1in
Maximum Width
70.2in
Maximum Dry Weight
14411lb

Standard Equipment

  • Air Inlet System
    • regular duty air cleaners, dual turbochargers, 152 mm (6 in) OD straight connection, corrosion resistant coated separate circuit aftercooler core
  • Control System
    • dual Advanced Diesel Engine Management (ADEM II) modules with electronically controlled unit injectors
  • Exhaust System
    • dry gas-tight exhaust manifolds with thermolaminated heat shields, dual turbochargers with watercooled bearings and thermo-laminated heat shields, vertical exhaust outlet, 203 mm (8 in) ID round flanged outlet
  • Fuel System
    • electronically controlled unit injectors, RH fuel filter with service indicators, fuel transfer pump
  • Instrumentation
    • RH electronic instrument panel with analog gauges and digital display of data for: oil and fuel pressure, oil and fuel filter differential, system DC voltage, exhaust and water temperature, air inlet restriction; digital display only for: tachometer, service meter, fuel consumption (total and instantaneous); start/stop switch
  • Lube System
    • top mounted crankcase breather, deep sump oil pan, RH oil filler and dipstick, RH oil filter, gear type oil pump
  • Mounting System
    • ledge type engine length rails, 203 x 203 mm (8 x 8 in)
  • Power Takeoffs
    • accessory drive on standard rotation engines: lower RH, lower LH; on opposite rotation engines: upper and lower RH and upper and lower LH; twosided front housing
  • Protection System
    • ADEM II Electronic Monitoring System with customer programmable alarm, shutdown, and deration strategies; emergency stop pushbutton
  • General
    • front and rear lifting eyes, Caterpillar yellow paint, vibration damper and guard
  • Flywheel And Flywheel Housing
    • SAE No. 00 flywheel (183 teeth) and SAE No. 00 flywheel housing
  • Cooling System
    • auxiliary fresh water pump on SCAC engines, non-self-priming centrifugal auxiliary sea water pump for heat exchanger engines only, expansion tank, gear-driven centrifugal jacket water pump, oil cooler, keel cooling connections for keel cooled engines, thermostats and housing with 92° C (198° F) full open temperature

Optional Equipment

  • Air Inlet System
    • Air Cleaner Removal
    • Remote Air Inlet Adapters
  • Charging System
    • Battery Chargers
    • Charging Alternators
  • Control System
    • Throttle Position Sensor
    • Throttle synchronization
  • Cooling System
    • Water level switch gauge
    • Coolant level sensors
    • Connections
      • INLET/OUTLET CONNECTION
      • KEEL COOLING CONNECTIONS
      • SINGLE/COMBINED CIRCUIT
      • EMERGENCY WATER CONNECTIONS
      • TORQUE CONV COOLER CONNECTION
    • Keel cooling conversions
    • Heat exchangers
    • Auxiliary Water Pumps
      • SEA WATER PUMP
    • Sea water pump removal
    • Coolant shunt tanks
    • Air separator
    • Marine gear cooling
  • Exhaust System
    • Horizontal Exhaust Outlet
    • Flexible fittings
    • Elbows
    • Flanges
    • Flange and exhaust expanders
    • Mufflers
  • Fuel System
    • Fuel Cooler
    • Fuel priming pumps
    • Flexible fuel lines
    • Rigid Fuel Lines
    • Primary fuel filter
    • Fuel level switch
  • Instrumentation
    • PL1000T Communication Module
    • PL1000E Communication Module
    • Customer Interface Box
    • Thermocouples
    • Remote panel display
    • Remote cylinder temperature display
    • Pilot house instrument panels
    • Marine gear sensors
    • Engine Vision Display System
      • ENGINE VISION SYSTEM DISPLAY
      • GPS INTERFACE MODULE
  • Lube System
    • Oil Pan
      • DEEP SUMP OIL PAN
      • LIGHTWEIGHT OIL PAN CONVERSION
      • 500 HR OIL PAN
    • Oil Pan Accessories
      • OIL PAN DRAIN VALVE
      • OIL PAN DRAIN COVER
      • EMERGENCY LUBE OIL CONNECTIONS
    • Sump Pumps
    • Prelubrication Options
      • ELECT PRELUBE PUMP
      • PRELUBE CONVERSION - LH
      • PRELUBE CONVERSION-RH
    • Lubricating Oil
    • Lube System
  • Mounting System
    • Engine supports
    • Vibration Isolation Mountings
  • Power Take-offs
    • Flexible coupling and guards
    • Upper Left Hand Front Location:
      • AUXILIARY DRIVE SHAFT
      • AUXILIARY DRIVE SHAFT
    • Upper Right Hand Front Location:
      • AUXILIARY DRIVE SHAFT
    • Upper Right Hand Rear Location:
      • AUXILIARY DRIVE PULLEY
    • Lower Left Hand Front Location:
      • AUXILIARY DRIVE SHAFT
      • AUX DRIVE PULLEY/LLH FRT/4 GRV
    • Lower Left Hand Rear Location:
      • AUXILIARY DRIVE SHAFT
      • AUXILIARY DRIVE PULLEY
    • Front housing accessory drives
    • UPPER LH ACCESSORY DRIVE
    • UPPER RH ACCESSORY DRIVE
    • Front power take offs
    • Crankshaft pulleys
    • Damper guard removals
  • Protection System
    • Air inlet shutoffs
    • Switches and contactors
    • Explosion relief valve
    • Sensors
  • Special Appearance
    • Chrome Plated Relief Valves
    • Black Air Cleaners
  • Starting System
    • Starting motors or barring device
    • Air Starting Motor Options:
      • AIR PRESSURE REGULATOR LH
    • Starting Aids
      • JACKET WATER HEATER
    • Battery sets - 24 volt - Dry
    • Battery rack
  • General
    • Tool set
    • Caterpillar Datalink wire